Run CI only for the components a push changes

Desktop-only patches no longer run the explorer and Rust checks, and
explorer patches no longer run the desktop e2e suite.

.github/workflows/desktop-e2e.yml

@@ -1,7 +1,14 @@
 name: desktop-e2e
+# Only desktop changes, or changes to this workflow, run it.
 on:
   pull_request:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-e2e.yml"
   push:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-e2e.yml"
   workflow_dispatch:
 
 env:

.github/workflows/desktop-lint.yml

@@ -1,7 +1,14 @@
 name: desktop-lint
+# Only desktop changes, or changes to this workflow, run it.
 on:
   pull_request:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-lint.yml"
   push:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-lint.yml"
   workflow_dispatch:
 
 env:

.github/workflows/desktop-unit-test.yml

@@ -1,7 +1,14 @@
 name: desktop-unit-test
+# Only desktop changes, or changes to this workflow, run it.
 on:
   pull_request:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-unit-test.yml"
   push:
+    paths:
+      - "desktop/**"
+      - ".github/workflows/desktop-unit-test.yml"
   workflow_dispatch:
 
 env:

.github/workflows/explorer-build.yml

@@ -1,6 +1,17 @@
 name: explorer-build
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:

.github/workflows/explorer-check.yml

@@ -1,6 +1,17 @@
 name: explorer-check
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:

.github/workflows/explorer-e2e.yml

@@ -1,6 +1,17 @@
 name: explorer-e2e
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:

.github/workflows/explorer-http-client-unit-test.yml

@@ -1,6 +1,17 @@
 name: explorer-http-client-unit-test
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:

.github/workflows/explorer-rust.yml

@@ -1,6 +1,14 @@
 name: explorer-rust
+# Only changes to the Rust workspace, or to this workflow, run it.
 on:
   push:
+    paths:
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:

.github/workflows/explorer-unit-test.yml

@@ -1,6 +1,17 @@
 name: explorer-unit-test
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env:

.github/workflows/explorer-visual.yml

@@ -1,6 +1,17 @@
 name: explorer-visual
+# Desktop and Rust-only changes don't affect the web app: its tests run
+# against a pinned, pre-built radicle-httpd.
 on:
   push:
+    paths-ignore:
+      - "desktop/**"
+      - "crates/**"
+      - "Cargo.toml"
+      - "Cargo.lock"
+      - "rust-toolchain"
+      - ".cargo/**"
+      - ".github/workflows/desktop-*.yml"
+      - ".github/workflows/explorer-rust.yml"
   workflow_dispatch:
 
 env: